Attofwey



H. L. PITMAN.

COMBINED TYPEWRIUNG AND COMPUTING MACHINE.

APPLICATION FILED OCT. 25.19]?- Patented Aug. 24, 1920.

4 SHEElS-SHEEI l.

INVENTOFF 4 m ATTOR EY.

WITNESSES WWW H. L. PITMAN.

COMBINED TYPEWRITING AND COMPUTING MACHINE.

APPLICAHDN FILED OCT. 25. IQIT.

1 350,387. Patented Aug. 24, 1920.

4 SHEETSSHEET Z.

WITN E$SES= WQ H. L. PITMAN.

COMBINED TYPEWRITING AND COMPUTING MACHINE.

APPLICATION FILED OCT. 25.19". 1,350,387, Patented Aug. 24, 1920.

4 SflEETS-SIIEET 3.

INVENTOPG y fl-uy BYZQ {I E ATTORNE .dMa/W W wrrNEssEs= OAM Q.

H. L. PITMAN.

COMBINED TYPEWRI-TING AND COMPUTING MACHINE.

APPLICATION man ocnzs. um. 1 Patented Aug. 24, 1920.

4 SHEETS-SHEH 4.

INVENTOR M ATTO EY OINMQM Q y WITNESSES UNITED STATES PATENT OFFICE.

HENRY I1. PITMAN, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO UNDEBWOOD COMPUTING MACHINE COMPANY, OF NEW YORK, N. Y.. A CORPORATION OF NEW YORK.

COMBINED TYPEWRITING AND COMPUTING MACHINE.

Application filed October 25, 1917.

To all whom it may concern.-

Be it known that I, HENRY L. PrrMAN, a citizen of the United States, residing in East Orange, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Combined 'lypewriting and on'1puting Machines, ol' which the following is a specification.

This invention relates to combined typewritiug and cmuputing machines, and is illustrated in connection with improvements disclosed in my application No. 186,098, filed August 14, 1917.

In the prior application, a plurality of totalizers were shown for computing in vertical columns, and a cross-totalizer for computing in horizontal columns. The series of vertically computing totalizers were connected to travel continuously with the typewriter carriage, while the crosstotalizer was intermittently connected to vibrate repeatedly during a single run of the typewriter carriage. In case it was neces sary to return the typewriter carriage after having advanced beyond a computing zone, for the purpose of correcting an error, it was previously necessary to return the car riage beyond the computin zone and then readvance the same, so t at the pick-up connection between the cross-totaliz'er and the typewriter ca rrihge could come into play properly. If thiswer'e not done, erroneous typewriting without computing would take place. i

In the present case provision is made whereby the typbewriter carriage need only be returned or rick-spaced to the particu lar digit column where itis desired to correct an error, and other means is provided For repositioning the cross-totalizer. This may be done by reconnecting it with the typewriter carriage at the'proper' point, so that the computing Wheel corresponding to the particuler digit column at the printin g point will be in register With'themaster wheel. This includes a connection from the hack-space key, whereby the back-space key, when operated, Will give the cross- Spccification of Letters Patent.

Serial No. 198,375.

totalizer an idle advance movement its full throw, and then permit it to return, so that the hook, which causes the traveling of the cross-totalizer with the typewriter carriage. will become reconnected to a dog on the type-writer carriage, corresponding to the computing zone or column in action.

This mechanism requires the operation of the back spacer whenever the typewriter carriege is returned to a computing zone, without returning it beyond the computing zone or for the full length of its return movement. In order to prevent error, locking means is provided for preventing the operation of the numeral keys when the type writer carriage has been partially returned into a. computing zone without an operation of the back-space key. The lock for preventing the traveling movement of the cross-totalizer when a computing operation takes place is made use of for this purpose. This consists of a blocking lug on the traveling totalizer. which is engaged by a toothed lever at the OJerat-ion of any of the numeral keys. A ter finishing a zonal run with the typewriter carriage, the cross-totalizer is arranged to return to a point just beyond the registering of the master wheel with the computing wheel of highest denomination. When the typewriter carriage is returned to a computing zone,

the pick-up dog on the carriage corresponding to that zone is arranged to advance the hook, which is normally connected to the dog in a computing operation, a short distance so that. through the connecting train of gearing, the cross-totalizer will be advanced far enough to bring the blocking lug thereon into the path of the tooth on the locking lever, to prevent its operation. The locking lever acts back on the numeral keys, so as to prevent an operation of the numeral keys; Thus, the back-space key must be operated to give the cross-totalizer a forward and backward movement, to bring about 51 connection of the pick-up hook with the pick-up dog corresponding to the com puting zone at the printing point.

Patented Aug. 24., 1920.

This

will bring the blocking lug on the totalizcr out of register with the locking lever, permitting an o 'ieration of the numeral keys.

As this latter locking mechanism is operated by the pick-up dog for the crosstotalizer, it lies in the path of travel of the pick-up dogs and also in the path of their movement when being set. Provision is therefore made for temporarily removing the locking mechanism from the range ot the pick-up dogs when the latter are being set by the key-set tabnlating mechanism.

Other features and advantages will hereinafter appear.

In the aeci-in'ipanying drawings,

Figure 1 is a side view in elevation, with parts omitted and broken away to show the underlying v structure.

Fig. is a fragmentary, skeleton, perspective view, showing the connections from the back-space key for giving the cross-totalizer a re-registering vibratory movement. This view also shows the means For clearing the nnIneral-key-kicking mechanism from the pick-up dogs when the latter are being set.

ig. 2- is a rear view in elevation, show ing the means for locking the numeral keys .when the typewriter carriage has been brought back into a computing zone. This locking means is shown in its inactive position as the carriage is properly connected to the cross-.totalizer and moving in a normal letter-feeding direction.

Fig. 4 is a detail view, similar to Fig. 3, showing the cross-totalizer as restored to starting position after the release of the pick-up connection, and ready to be caught by the next pick-up dog tor the next computing zone when the carriage is advanced far enough for the latter to reach the same.

Fig. 5 is a detail view, showing a part of the mechanism illustrated in Fig. at, in which a ick up dog is in the act of being released rem the pick-up hook, and before the oross-totalizer has returned to its startin position. i

Fig. (5 is a detail view, similar to F gs. 4 and 5, after the carriage has been moved. back into ,a computing zone .without the assistance of the back-space key, and without passing through that zone, and showing how the pick-up dog locks the numeral keys by advancing the totalizer carriage slightly beyond starting position.

Fig. T is a view, similar to Fig. 6, showing the mechanism for giving the crosstotalizer a full stroke advancing movement when the back-space key is operated to move back the typewriter rarriage and bring about a re-registering of the cross-totalizer with the typewriter carriage.

Fig. 8 is a detail view of the key-set table lating mechanism for setting the totalizer pick-up dogs, with the means tor clearing the numeratkey-lock which may be operatcd by the stop-setting means slightly in advance of setting the pick-up dogs. This view shows the clearing mechanism in its inactive position prior to the setting of a pick-up dog.

Fig. 9 is a view, similar to Fig. 8, after the key-set tabulating mechanism and the pick-up dog-setting mechanism has been operated, which action-clears the lock controlling cam operated by the piek-u-p dogs, so as to pernnt the setting of a dog.

Alphabet keys 1 and numeral keys 2 operate key-levers 3 to rock bell-c 'anks 4, so as to swing type-bars 5 up rearwardly against the front side of a platen 6 mounted to rotate in a carriage T. The carriage T has the usual step-l.)y-step movement nn.- der the control of an escapement mechanism indicated in general at 8. This escapement mechanism is that found on the Underwood standard typewriter, and includes a rack bar 5) pivoted to the carriage T, so as to en gage a pinion 10 connected by a one-way pawl-and-ratchet mechanism (not shown) to an escapement wheel 11. The wheel 11 is controlled in its movement by fixed and loose dogs 12 and 13 operated by a floating frame 14, which carries a universal bar 15,

engaged by ,heels 16 on the type-bars 5. This enables the carriage '7 to be advanced step by step in a letter-feeding direction at the operation of the alphabet keys 1 and the numeral .keys 2.

In addition to havin a letterfeeding movement, the carriage t has major jump or cohunirselecting movements for the purpose of moving the carriage quickly from zone to zone. This includes tahulating keys 17. (Fig. 1), which operate plungers 18 to project the latter into the path of stops 19 on a rack 20 carried by the typewriter carriage T.

The stops 19 are arranged. to be key-set, so that the carriage can be positioned to any particular letter-space and the stop corresponding to that space for a zone or maior column automatleally selected and set. This includes a series .of the stops 19, one fol-each lettenspace on the typewriter carriage 7, and they are adjustably held in their set and unset positions on the rack bar 20. To set these stops, there is provided a key 21, Fig. 2, which, when operated against the tension of a spring 22, thrusts downwardly on a link 23, so as to rock an arm secured to a rock shaft 25, which, in turn, rocks on arm 26 to draw down on a link 27. The link 27 is provided with a slot 29through which extends a rod 28 to guide it for substantially vertical move naents. This link 27 is provided Withan oil'- set 30, which overhangs the row of .columndeterminingstops l9, and when the key 21 is operated, depresses the particular stop 19 which happens to lie {111(61 it. This stop corresponds to the letter-space position of the carriage, and will subsequently bring the carriage to a halt at a corres onding position when one of the tabulatmg keys 17 is operated. This mechanism is used, as will be seen subsequently, in setting the pick-up dogs forming part of the connections be tween the typewriter carriage 7 and a vibrating cross-totalizer which will presently be described. r

' The totalizers which enable a concomitant computing action with-a typewriting action, so that the numbersifas'typewritten will be recorded,'include 'a'serie's of footing'ftotalizers 'or vertically. computing 'totalize'rs- 31, which are detachably and adJuStably mount ed on a supporting bar 32 which is connected to travel with the typewriter carriege 7 by means of one or more brackets 33. The vertically-adding totalizers 31 thus travel step bystep with the carriage 7, so thatthey can come into play when the typewriter carriage 7 is at computing zones or major columns correspondin to their positions.

' A crosstotahzer'M 18 provided foradding horizontallythelines of numbers v'vhich are computed. individually jintojjthe vertical or column jtotaliae'i's 'iilj .Th'is cross-totalizer 34, 'as explained in theabovementioned application, has a stepby-step advancing movement with the totaliz ers 31 and the typewriter carriage? for the rangeof a column or zone, and then returns quickly to a starting position,'so that it can advance in register with the next vertical column totalizer 31 in the next desired computing zone of the typewriter carriage.

Before going ,into details of this mechanism, the connection whereby the totalizers 31 and 34 are, driven from the numeral keys will be briefly explained. Each of the numeral keys 2 from .1 to 9 is provided with a valuating or indexing plate 35, which has a cam 36 of certain curvature corresponding to the value of its key. That is to say, the cams 36 are graded in their pitch or throw from a minimum for the 1 key to a maximum for the 9 key, whereby they operate a bail 37 graded amounts corresponding to the value of their associated keys. The bai137is detachably connected to an actuator 38, in a manner more fully described in the above-mentioned application. This actuator 38, when a numeral key is operated, draws down on a link 39, so as to rock a bell-crank a0, which thrusts forward on a link 41 so as to advance a driving rack 42. The driving rack 42 rotates, in a manner described in the above-mentioned application, a train of gearing i3, so as to rotate a master wheel 44 an amount corresponding to the value of the particular numeral key actuated. The master wheel 44 is positioned so as to drive a'computing train of wheels 45 of whichever one of the verti- 'nismis more fully described in my abovementioned" application. When any of the 'numeral'keys 2 is ac tuated, it operates a locking mechanism to lock. the traveling totalizers. This includes a cam lug 54 on each of the numeral keys 2 forming part of the plates'35 in the case of the numeral keys from 1 to' 9. The lu s 54 *are arranged to engage a bail 55. This -1nay be art of the usual -]ine lock mecha- *'iiism,"" hebail 55*ha's an extension 57 pro wise-(1m n apiir58arranged to rock an arm 59 securedtoash aft 60; The shaft 60 is prov'idedwith a locking arm 61 arranged to 'ehgage between the beveled teeth of a rack -62, '-providedjon the bar 32, which travels -with thetypewriterfcarriage 7. This locks the totalizle'rs 31a: inst a traveling movef ment when a'n'umfieris being run up into one ofthe 'totalizers by the master wheel.

To prevent a traveling movement of the crosstota'lizer 34, the shaft 60 is provided with an arm '63 connected by a link (34 to one arm on a rock shaft 65'having also an arm 66 mounted thereon. This rocks the shaft 65 upwardly, so as to move the arm 66 to bring the outer end 67 thereof in between two of the beveled teeth of a rack 68, provided on a vibratory carriage 69, to which the cross-totalizer 34 is detaehably secured. It should be understood that the forward ends of the arms 61 and 66 are pointed or V-shaped, to engage between the teeth 62 and 68, respectively. With this construction each arm also serves as an alining device to properly position the totalizers, so that the computing wheels contained there in will be accurately alined with their res ective master wheels. Thislockin'g or a ining mechanism associated with the cross-totalizer is' also used as a means to prevent an improper'operation of the numeral keys, as when the typewriter carriage 7 is in a computing zone without the totalizer 34 being roperly connected to travel therewith; Un er such circumstances, it provides means to prevent an operation of the numeral keys in a manner which is explained more fully hereinafter.

For the, urpose of eifectin an intermittent travelmg 'movement'of t e cross-totalizer 34 in synchronism with the carriage 7 and with eaohof the vertical column totalizers 31, provision is made for intermittently connecting the cross-totalizer 341,0 the typewriter carriage? F or this purpose there is provided on the typewriter carriage 7 to -the rear thereof a pick-up rack 70, which is provided with a series of pick-up dogs 711, one for each letter space of the typewriter carriage 7. Thepick-up dogs 71 are mounted forsliding movement back and forth ()f'lillB I'lLCk 70,80 :that they can be Set individually to determine at what points in the travel of the carriage 7 the cross-totalizer 34 will bepickedup for a synchronized traveling movement with the carriage 7 and with the vertical column totalizer 31. This is generally tocorrespond with the computing zone or columns as determined by the tabulating carriage stops 19. v

The same mechanism for setting the tabulating stopsdf) isused toset the pick-up dogs T1. or this purpose, the setting key 21 when operated, in addition to depressing one of the -tabulating stops 19, also sets for- \vardly a corresponding one of the r,piek-up dogs 71. For this purpose, the .linki27tis provided with an arm 72, Fig.2, which at times overlies-a pin 73 provided-on a swinging arm 74, pivotally mounted on'a vertical sliding link 75. lVhen the-pin 73 is within the rangeoftheo rm #72, a depression of the tabulatingsetting key 21 draws down on the link 75 so that apin'76 ontheiupperend-of this link will travel downwardly .in a cam slot .77, Fig-9, provided on a setting lever 78. This will rock the lever 78 about its pivot -7 9, so that the upper-endthereof moves 'forwar'dlyto setthe particular pick-up dog 71 which happens to be in register therewith. This pick-up dogi will correspond to the tabulating stops 19 set=at the same time, so that when a computing zone or 'major column ofthe-carriage 7 is determined upon, if it is desired to compute in the cross-total- -izer 34 -for this zone or column, the corresponding-pick-up dog 71 will be set, at-such time.

The position-of thepin 73 asto the arm 72 will determine whether one'of the pick-up dogs 71 shall be set. The position of'thevpin 73'1s-controlled from a lever 80 at'the front of the typewriting machine, which has .a 'losta'notion connection with a lever 81 by means-of-a pin 82, whichextends between -spaee arms-83 and 84 on the 'lever BL To silence the dog-setting finger 78 the .hand lever '80 is moved forwardly-wreck the lever 81,-50 astopull on a link 85 which-swings an arm BS-secured to a rock shaft 87. The rock shaft 87 is provided 'Withasecond arm 88 arranged-tomock a bell-crank 89 haying-a pin-and-slot connection 90'W1ththe swinging "arm 74. This will move the .pin -73 away 'from'beneath theoperating arm 72 Thus the|piok-up dog setting lever 78 is silenced so that it is not operated when the tabulating stop-setting key 21, isactuated. When the controlling hand lever 80 is operatedrearwardly from its forward position, I the pin will'be brought beneath theoperating arm ,72,,.so, as ito read th e pick-up dog setting mechahisrn efieeti vell v v The pickup dqgs 'fl; ,vvhe'n set are arrangedto engage, one,.,by one with a hook 91, provided on a rod 9 2, pivotally'connected to aaaclrharfill. ,Vvhen the hook 91 is engagedtby thevpiclg' up; dQgsTl and the typewriter carriage 7 is traveling an advanc ing direction thej racki93 is driven to the right 'as seenin Figsfi and '7, sofas to rock a douhle s egment gear 94:, which is arranged to' drivea pin'ion'95. The inion 95 is secured to the rearend O' fL-a aft 96, Figs. 1

, and 2,4i3hich isproviiled atits 'forward end ,withapinionfi'l,ineshingwith a rack 98 on the vibratory arriage GQ; Tliis vibratory [carriage carriestl e'crossftotalizeriigso that when apicfkfnp dqg ilfcori'esponding to a typewigiterfzoneior, major column is in en .gagemei1t with the hook 191, the, cross-totalfizel ii't-will have. a step by step movement in synchronismi wit h the-typewriter carriage 7, and also syncla'ro'nisin with the vertical column totalizerfil, there'happens to be one .set; on the bar;32 at ajpoint correspondto this particnlar computing zone or major. column.. i'lhis will advance the crosstotalizer .34, ,sitep step to bring the corn puting wheel ltrai'nf thereof into individual register with the mastervi'heel 47,sothat the digits as typewritten for aparticdlar computing zone selected'willhe run upiintot-he .cross-totalizer 34;. i

The advancing movement of the cross-totalizer 3:1 is done against the tension of a spring 99 wound on the shaft '96. This spring 99 returns the cross-totalizer 34L at -the end of each computing zone or column that it travels, inninison with the carriage 7, afiterthehook 91 is disconnected from the ick-up dog 71 in engagement therewith.

he hodk 91 is normally heldinla raised position to on age 'thepick-up dogs 71 by means of a ever 100, which has a pin 101 underlying theirs-(1 92. flh'e'lever is held by aspring 102 against a stop 102. When the cross-totalizerI 34reaches the end of its' advancing movement andthe digit is run ,up, in thejii'n'its computing train, a "pin 103 on the rod 92 comes' into vengagninient withla fixed disconnector104 inthe form of a cam, so that the pm 103 andthe rod 92 are depressed against the tension ofthe sprin 102, 5. A notch 1105, Fig. 5, is provided on the rod .92 corresponding to the end of the travel'of thecross-t'otalizer 34. This ,permits the hoolr91 to move downwardly, without tensioning the spring 102, and clear a particular pick-up dog 71 m carryingen- .gagement therewith, so that the spring 99 can not to return the book 91, the rod 92, the connecting trainof earing and the crosstotalizer 34 to their initial or starting po sitions. 'lhis aot'ion' can berepeated for each" computing zone or column according to the number 0 pick-up dogs 71 which are in their forward active position f If the cross-totalizer 34 is disconnected by the advanceme'ntof the carriage 7 beyond a computing zone and the carriage 7 is brought back into thiseomputing zone, withcureompletely returning or without passing clear throu h the computing zone'and 'r'e advanc ing, t en the cros's' totalizer 34'wlill not be connected for traveling movement with the typewriter carriage 7. Under such 'circ'iiin stances, digits ty emitted, as, for example, for the purpose picorrectingan error, weuld not be run Into the 'cros's-ftotali'zer 34. Where it is desired to run these digitsinto the-crosstotalizer 34, provision is made for'ant'omatically insuring the reconnection of tl e cross'- totalizer 34: with theoarriag'e 'iiThis is done indirectly by pro'vidin r'neans forf'lock ing the nnmeralkeys when t e carriage isfre turned into a computing zone without'oaus ing the cross-'to'talizer t'o""be reconnected therewith. simple ;key-bperated"'mecha nism is provided, however, for boiicrinih tantly back-spacing the carriage'into a corn puting zone and reconiiectin' the 'c'ross'f'td talizer in proper relationfwit oiit rendering said numeral key-locking' means effective. This locking means and associatedfmecha nism will now 'bedescribedf The cross-totalizer carriage'69, as willbe seen by reference to Figs. 4, 6 and 7, is provided with a blocking lug 106, 'for'ming a continuation of the locking rack 68, which, when the cross-totalizer 34 'has returned to its starting position, will come to a position just in the rear of the locking 'arm67. Unless the carriage 7 is broughtfback"into a computing zone while the eross-totalizer 34 remains at its initial or starting position, the numeral keys will 'befree to operate; \Vhen the carria e 7 is brought back to a computing zone iiy a' partialreturnmove-' ment, thepicl -up dog'71 corresponding to the computing zone will engage under 1a; cam 107 avingan active range correspond; ing to the number of digit columns-offa computing zone and the number of com puting wheels of the cross-totalizer 34; The cam 107 is turned up at the end, so that the pick-up do s 71 set for'a computing zone will raise the cam 10?,ahd thereby raise a lever 108 ivoted at 109 and guided at 110 from the ig. 4 to the Fig. 6 position. The cam 107 is secured to the lever 108 b means ofa braeketlll. The raisin of t 'elever 108 will cause the rocking-o a bell-crank 112, pivoted on the lever 108, by 'bringinone arm 113 thereof into engagement with a fixed pin 1'14. 'Theother arm of the bellcrank 112 engages the pin 103 provided on the l'ink red 92. This will advance the rod 92 and the hook 91 against the tension of the spring 99 a distance suflicient to bring the blocking lug 106 into the path .of the lockin arm 67 and thus prevent an operation 0 an Iy of the numeralkeys of the typewriter. be locking of the numeral ke s is caused by the bail 55being prevented rom rocking and in turn obstructing the movement of the cam lugs 54.

The numeralkeys cannot be operated iinder suc'h circ'nms'tances'u'ntil the crosstota'lizer 34 has been re-registered and reconnected to the typewriter carriage '7. i To give the oross-totalizr ii i an idle vibratory movement for this pur ose,'-the regular backspacemechanism of t 'e type'writer' is made use-of." This back-space'me'chanism is exlaindf in a 'patentto Helmond 930,962.

his mechanism'employs a back-s ace key 11 5,which when depressed rocks a Key lever 116 seciire'd to'a' r'ook shaft 117. The rock sha'lti"117" de resses an armj118 to draw down on a'lin 119; as to oper'atethe backs ace piwl 120,- which'fissecured to arocker 121. his pawPhasa double connection with ith'e 'lin k 119, by means of a spring 122, and 'apivot 123. "Theac'tion is such that the paw l"120 fs firstjbroughtintomesh with the typewriter rack" 9' first being rocked about a pivo't' 1 21" an d then being rocked abouta pivot 124, =so as'to move the typewriter carriage 7 in a return direction one letter-space. This mechanism is more fully described'in the above-mentioned patent to Helmond.

The back-space key 115 is connected to the cross-totalizer 34 by means of a linkage 125,-which rocks a'bell-crank 126, so as to thrust laterally a link 127, which rocks a lever 128. The lever 128 has pivotally conne'ct'ed'thereto a link.129 having a pin-andslot connection 130 with the carriage 69 of the eross-totalizer 34-. The slot of this-pinand-s'lot connection 130 is of sufficient length to permit a full travelin movement of the cross-totalizer 34 from t e typewriter carriage whentheback-spaee ke 115 is in its raised inactive position. en the backspace key is depressedwith 'the cross-totali'zer34; in its initial or starting position, the comic-(sting linka e' will advance the cross-totalizer 34 its'fu; 1 stroke, thus'advaneing the rod 92 and thehook 91. Under such circumstances, ifa pick-updog 71 is within the range of a computing zone, as in Figs. 6 and 7, the book- 91 will be. depressed against the tension of the-spring 102 and pass beyond this pick-up "dog; then when the-bacl'r-s ace key 1151s permitted to return, the sprmg 99 will return the crosstotalizer 34 anditscariiage until the hook 91 catches onto the said pick-up do' 71 in the range of the computing zone. T is will reconnect the cross-totalizer 34 to the typewriter carriage 7, so that the numbers as typewriten will; be run up into the computing. wheels, of the crosstotalizer in their proper denominations. The movement of the crossetotelizerfl t withdnaws the blocking lug 106 fnornits obstructing position with respect to the lockingilever 66, so that the numeral keys can now be operated to. print and compute.

It should be understood that under ordinar-y conditions, when h eearriage has just left a computing; zone, the back-space key 115 is used;wire-positionithe. typewriter carriage in: a computing-zone, and, that when the typewriter; carria e. is'so being posi tioned, the= cross-tote izer isralso 116-9051- tloned, by means oi the back-specs key, to. register with the -t otalizer on the typewriter. carriage. It should fur tlierqbe understood that if the typewriter carriage is re-positioned'to a computing zone ,WlhllOUbthB aid of the backspace key 115, this movement will be effective to, lock the numeral keys. If theiopeizatornow attempts to write with the numeral keys, he-finds them locked, thus bringing to his attention the necessity: of, actuating,- the back-space key, which, movement is efl'ect-iveto{re-position the-cross totalizer to bringit to register denominationally withlthe totalizer on the-typewriter carriage by causing the hook 91 to reengage with one'of 'thedogs 71 1 To cleari li fieln; 107, or, in other words, to raise it out of the, path of the pick-up dogs 71, when setting the latter, there is provided; a shifter, 131 pivotedtoa bracket 132, located alon side of'the-tabulating stop setting linlrf27, -igs. 1 and 2, This link 27 is provided with a pini133 normally=cngagzing in zrnotch 134, Fig. 8-, lJIOVqldGdfOlL one arm-of the shifter 131. When the-link 27 is depressed to set; a tabulatin stop, which is also coincident with the setting 01 a pickup dog 71 whenever5one of thelatter is set, the pin 133= rocks the shiften 131 so as to raise the-cam 107 clear of the pick'updogs 71, so thatbya-continued movementoflthe link 27, the selected dog 71 may be set. After. the setting-operation of the pick-up dog and tabulatingstop has been; completed, the upward movementof; therlink 27 will permit areturn of the cam'lO'T, so that it can be subsequently operated'by; any one of the set;pick-up dogs-71-to-bringin laythe numeral'key lockin mechanism. arrangement-does notmte-rfere with the operation of the cam 107 fOI" the purpose of locking-the numeral keys astthe shifter 131 rocks idl with respect to the pin 133.

Consi ering the operation of-the device for a predetermined character of work, the tabulating stops '19 and the pick-up dogs 71 are set'by the-key 21 to l'JOIlBSPOIId with the particular typewriting and computing zones to bo detenmined-by theposition otthe type writer capria c, in which it is desired to compute int ecross-totalizer 34 in synchronismwiththety pewritin The vertical column tptali zers 31am 0, justed to ,corrospond with the t peyvrit'ing zonesin which it is desiredtoa d-upthecolumns vertically The 'pickrupdogs lh need notbe set in every. instance where there isone of the tabulating.st;ops,,19 set,-but.only inthe case 013 such cohunnsnvhere ltiSJlQSllGCl,t0\(;1'OSS add. Theclearanceoi the .cam 107 to permit thesetting of the -pickmp do s 71 is prorided' for byshifting it from tie stop e tme e e i m I For, a normal; combined, typewriting and mru m i HQWUPIH the a age. e en iromzone to. 2pm and, ste ,by step i in, each Zones eas QJY-B I an i mp uwy uplh er ic o lumns ,of; numbers in such of the totalizers 31 asare set for computing in theydifilerenhmejonwotunms or zones. The ,crcss-totalizer, ;3.4',will be picked up autometioally by the dogs 71in suchizones as it issdesired' gto computetherein, and will be carriedhalong step, by step with the'typewritercarriage,anddroppedto return to its starting position the; end. of, itscapacity. and-at, the-end of, the .otmiputingv zone.

Intcase the typewritencarriage is returned partially, after, having; .adyanced beyond acomput lng ,zone, $0,352.19 reenter this computing zone withoutgpassingclearthrougli it, in which zone thetcrossY-totalizer 3Q should be connected .tothetypewriter carriage 7 by a previously-sets:pickeup dog, 71', then this dog iw-ilL cause a lockingofi the numeral keys, so-as to-insure a reconnectionofthe crosstotalizer 34' in synchronism= with the typewriter carriagei. This isaccomplished by a pick-up dog; 715 corresponding to-the zone raising the cam 10'?" so as to advance the cross-totalizer 3t4islightlyr beyond -its supporting, point-to. bring the; blockinglug 106 into ianobstructing position with respect to the loc n fiJjm 6fi Thislocking arnrGT is operetedrom ,themumeral keys, and-when it cennot operate itself it ,acts back on the numeral, keys.;t0 prevent their operation. 'Ilhismarns the oeratiye that the carriage has (been: returned gtou a computing zonein which 'the -cross totalizen 34 ,should be reoonnectedqto [the typewriter; carriage 7 and is not, The-'same general efliect ,is obtained ii -the crpss-totalizerfis is disconnected, accidentallyor; otherwise, while the carriage is in a computing zone-.1 If rod 92-is1disconnected from dog 7-1;whenthe arts are posh tioned as showniin Eig 7, ell-crank 112 will; act as! 111 stop fo h'pin 103,- and consequently; the crossrtotalizer, awill, .be stopped in the positiomin which itis effective to lock the numeralkeys. Thus a false operation of the numerale key which would. tend to print numbers intended to be computed without computing'them'in the cross-totalizor, is prevented. i

The cross-totalizer 34' can be reconnected under such circumstances to the carriage 7 by an operation of theback-space key 115.

' This will shift thecarriage-7 -in:a -return machine. LAt the release 0f the =back-space keyfthe hook 91' will 'fretu rn until 1 it is caught by this pick up dog' ilgth'ereby bringingthe cross-totalizer 84' 111 sy noh-ronis'mwidth; the typewriter carriage 7 a nd :reconndcteidufor travel with "the typewritercarringe 7 tier :any

movement of the typewritercarniagei 11in this "computingflzonci This will 'enable the running up of the digits'esitypewritten into: the cross-totalizer' 34, -prevent1ng any -tyiper: writing without computinm-Uoh 1 1;

Variations mey -bc resorted to witl nlthc scope of i the invention; Jand "portions :of the improvements may (be used withoutwother'sr Plnving thus'describedrmy iinvention, II c aim? i (91 a 51'12 7- 1'. The "combination with a typewriter dare, riage, of 'a computing unit 1 comprising two primary elements vincludin'g .;regis'tering mechanism and driving means therefor, said primary elements-hevinga relative traveling movement, a computing carriage detachably connected to said typewriter carriage to effect such relative movement, numeral keys, mechanism operated by said numeral keys for effecting a combined tyipewriting and computing operation, and locking means forsaid numeral keys brought in play when said typewriter carriage is in a computing zone and said computing carriage is dis connected from said typewriter carriage, whereby a typewriting operation .by: 1said numeral-keys is preventedin acomputin'g. zone when said computing unit issilenced.

2. Thecombination with a .typewriterfcar-. riage, of type-actions including .numeral keys cooperating with-said carriage to print, a computing unit comprising two primary elenientsvhawinge relative traveling movement, detachable connections-between one o'f said-primary elements nnd said typewriter carriage for-effecting such relative movement, locking lmeans for said-numeral keys to prevent operation thereof to typewrite in a computing zone after-said traveling ele ment :has been-disconnected from sa id -.cerriagc to-prey enta typewriting' operation, and menns for;- reionnecting said traveling element to said 3 typewriter"- carriage acting to unlock said numeral keys.

Mal -p "3. The combination with a typewriter can riage, of type-actions cooperating with said cs'n'riego including numeral keys, a computin llnit;00ntl0ll0(l by said numeral keys to (:fl'Glt a combined computing and typewriting operatiornsaid computingunit including two primary elements, one traveling to effeet a relative step-hy-step movement be tween said primary elements, connections between saidtraveling element and said typewritei carriage automatically interrupted on leaving a; computing zone as determined by said typewriter carriage, and back-space mechanism for said typewriter carriage arranged to iiutomaticnlly recomplete said con nections j'obetweenvsaid typewriter carriage nndisaid traveling element when returning ton predetermined 'oomputing zone for said computing unit.

24.-'1I,he combination with a typewriter can rings, 01*] anomputing unit having two pri mar-yvelements,; one traveling relatively to the other zto efl'eot a step-by-step movement, automatically interrupted connections he lnveenisaid tifaveling element and said type writer ricurriage, enabling a synchronized movement of said traveling element with said typewriter carriage solely for a comput iligzone, a keyboard including numeral keys forfiefi'ecting a comhined typewriting and computing operation, and means for recompleting Ethe connection automatically interrupted between said traveling element and said typewriter-carriage from said keyboard. 1 5.;The comhinationwith atypewriter cartinge, of (t-computing:unit. numeral key operated mechanism for effecting combj nod typou'riting and computing operations, automatic connections for intermittently joining said computing unit to said typewriter carriage so as to have a synchronized operation at 'iredetermined points in the travel of said typewriter carriage, and locking means for insuring a reconnection of said oomputing unit with said typewriter carriage in case said computing unit, has been disconnected from said typewriter carriage while passing through a computing zone for said computing unit.- 3

6. The combination with a-typewriter carriage, .of a, computing unit, synchronizing mechanism, ,for, causing computing operationsof said computing unit .to keep step with said typewriter carriage including settable dogs, and parts operated bysaid dogs when'set,.the 'latteiyparts ,lying in the path of the setting movement of saidvdogs, and means for concomitantly setting one,of said dogs and clearingsaid parts to permit,the setting of said dog. ,7 r 7. The combination; witha typewriter carriege, of tabulating mechanism for controlling the zonal positions of said carriage including tabulating'setting mechanism, a computing unit, connections for cynchronizill) '- predetermined intervals in the travel of said typewriter carriage, setting means for said pick-up: dogs operated. fromlsaid tabulating setting mechanism, means for insuring the reconnection of said computing unit in synchronism with-said typewriter carriage after disconnection, parts of said last-mentioned means-lyingin an obstructing position preventing the setting of said pick-up do s, and means, rendered effective, concomitantly with the'setting orsaid picki-up dogs 'by an operation of said tabulating-setting mecha nism; for'clearing-said obstructing parts to a position permitting the setting of said pick-up dogs.

8. The combination with in computing unit comprising two'priinaryelements, of traversing means for'on'eof said primary elements, enablinga relativestep'bystep movenicnt between-them. for a predetermining computing zone, means for disconnecting. said traversing means, means, including numeral keys, for-"operating said computingunit, and silencing means for said numeral keys operated when said traversing means is disconnected while in said predetermined computing zone.

95 The combination with a computing unit including two primary elements, of traversing meansfor'eff'ecting a' relative stepby-st'ep movement between said primary elements according to a prearranged plan ofcomputing zones, means, including inumcralkeys, for operating said computing unit, a lock for said numeral keys controlled from said" computing unit, and means for giving an idle traveling movement to one of said elements of said computing unit, acting to relase said lock.

10.- Thecombination with a typewriter carriage, of a computing unit comprising two primary elements, one traveling relatively to the other to effect a step-by-step relative movement, connections enabling the traversing of the traveling element of the computing unit from said typewriter carriage, back-spacing mechanism for said typewriter'carriage, and a linkage connected to be operated by said back-spacing mechanism arranged to traverse said traveling element of said computing unit, so as to bring about a readjustment of the relation of said traveling element with respect to said carriage.

10; The combination with a typewriter carriage, of a computing unit having a travelingelement connectible to travel with said typewriter carriage, backspacing mechanism for said typewriter carriage, and connections enabling a traversing movement of said-wavelii'ig element by said backspacing mechanism independently of said carriage.

12. llihe combination! with a traveling typewriter carriage, of a! computing unit havingra traveling element, connections for traversing, said element from said typewriter carria e, a-key for controlling the posit-ion of sai' typewriter carriage, and connections; for traversing said traveling clcmentufrom said key including a lost-motion connection: enabling said traveling element to be traversed by said carriage independently of a: movement of said key.

13. The combination with a typewriter carriage,.ofi ascomputing-unit having a travelingielement, connections enabling the traversingof said travelingelement from said typevariten carriage at. predetermined points in thefltravelof said, carriage, saidconnectionsincluding-a plurality of piclcup dogs, means, including numeral keys, for controlling: the traveling movements of said typo wr1tercarriage and the computing operations of said computing unit, and locking means for said numeral keys operated by said pick-up do s.

14, The com ination with a typewriter carriage of a'computing unit having a traveling element, oonneotions'for intcmnittentl y traversing-1 saidtraveling element with said typewriter carriage including a plurality of pick-up dogs: settable between: active and inactive positions-connections operated by said! pick-up dogs when im anactive computing zone predetermined. upon for said computing unit for insuring a connection ofthe traveling elementof said computing unit with aspiclcup dog-of said typewriter carriage, said last mentioncd connections including acam arranged to be directly operat'ed'by set ones of said piclcup dogs when in acomputing zone, and means for shifting: said cam: fronr a source other than. said pick-up dogs to permit a setting of said pick-up dogs to an active position.

15'. The combination with a typewriter carriage, of a computing unit having a traveling element, connections for traversing said traveling element from said typewriter carriage=including a pluralityiof pick-up dogs adjustable between set and unset positions, a typewritin mechanism for determining zonal positions of said carriage including: a series of tabulating stops adj ustablebetween set and onset positions, a link for setting said tabulating steps, a lever for setting said pick-up dogs, connections enabling the concomitant operation of said link and said lever, means, including a cam nor mally positioned in the path of-said pick-up dogs to be actuated thereby, to insure the synchronizingof said traveling element with said typewriter carriage, and a bell crank operated by said link for moving said cam to a positioni out of the path of one of said pick-up dogs being set by said lever.

16. The combination with typewriting and computing mechanisms having traveling elements to movcfat times in unlson of means for controlling the. typewriting traveling element including a series of tabulating sto s, means for controlling theEmovementsofit e computing mechanism travelingelement: including a series of pickmpdogs, means .for concomitantly settingatabulating stoprand a pickup dog both-corresponding to. ithe same vzone, connections .-for insuring :a symchronized' movementv of the traveling ele ments a of the itypeivriting V-and computing mechanisms 1 including-i a; partaoperatedvby one of said dogs; and shiftingmeans :operated by said' 5 stop-setting 'mechanism e for moving said part to a cleared'position, admitting of the setting ofw'the dogs o'p'erating Ithe'same. w r 2'1,

S 117. The: combinationwith =a typewriter carriage, bf a computing uniithavingintravel ing :eleinent, automatic pick-up connections ienabling said traveling element todber'inter- :mittently carriederby said carriage during a .eontinuous irun of said carriage .accordingjto a prearranged plan ofseomputing zones,iand an auxiliary meansio'r affecting. the position of said travelingelement when said typewriter :carriage I is in a predetermined corniputing-zone with said traveling element disconnected from said typewriter carriage,

18. r The combination with a traveling typewriter carriage,=of a computing unit having a traveling-element, automatic pick-up connections between said typewriterzcarriage and said traveling element,-enabling said traveling element to be intermittently: traversed from said typewriter carriage according "to a prearranged (plan, said connections including a series of pick-up dogs and a hook arranged to be individually connected to each -of' said'piek up dogs iwhenin a computing zone, and means operated by a pick-up dog when in acomputingrzone for operating said connections to ohange'the position ofsaid traveling element when said hook is disconnected from the pick-up dog in the computing zone.

19; The combination with a typewriter carriage, of a computing unit including. a traveling element, connections fortraversing said travelin ';element of said computing unitfrom sai typewriter carriage including a train of gearin a hook connected to operate said-train o gearing, and a-seriesof dog's scttable to .a position to engage 'said hook individually and traverse the same when in a computing zone, means for auto matically disconnecting said-hook from said dogs at the end of a computing zone,land means for enablingwadog when returning into a computing zone, after having advanced the same, to operate said hook so as to give a partial indirect advance movement to said travelin r element.

.20. The comhination with a typewriter carriage, of a computing unit having a traveling element, connections for traversing said traveling element from said typewriter can riage including, a train of gearing connected tosaiditraveling element, a hook connected to EOPGI'iLlLGSflid'tILiH of gearing, and aseries of pick-up dogs settable to engage and traverse saidshook when in a computing zone, automatic means 'for disconnecting said hook irom .each of :said pick-up dogs as they ad vanee through acomputing zone, numeral keys forrcontrolli ng said; carriage and said computing unit, locking) means for said traveling element operated by saiduiumeral keys, a blocking lug on said traveling element onipable of being. broughtwintothexpath of movement of said locking means so asto act -back-on-said-numeral keys and prevent an operation of; the same,z-and"means operated by anymfsaidpick-upddgs when returning into .:a-computing zone, after having been disconnected fromisaid'hook', to give a par tial actuationof .said connections between said-typewriter carriage and said travelin; element, so as to bring said blocking lug into the path of the locking means to said numeralkeys.

i 1 21. The combination with a traveling carriage, of a'computing unit having a traveling element, one or more pick-up dogs on said carriage, a hook connected to said tra'veling element arranged to be engaged and traversed bysaid pick-up dogs during a. traveling movement of said carriage, means for disconnecting said hook from said pickup dogs, means for returning said traveling element to a starting position when said hook is disconneeted from said carriage, a set of levers for advancing said hook slightly from its starting position, and acam connected to operate said levers having a range of a computing zone and positioned to be operated by a dog when 1n .a computing zone, whereby said-traveling element may 'be slightly advanced a from said carriage when said carriage hasbeen returned to a computing zone after disconnecting the dog from said pick-up book. .2 1' 5 22. The combination with -a typewriter carriage, of a computingunit including a traveling element, connections forintermittentlytraversingisaid traveling element from said typewriter carriage including a hook and a plurality of pick-up dogs engaging said hook, means or disconnecting rsai book from eaehof said dogs at the endof a computing zone, and means operated .from one of said pickfup dogs as it returns into a computing zone for insuring 'the reconnection of said hook with the pick-up dog in the computing zone, and thus the :reconnection of the traveling element with said typewriter carriage.

23. The combination with a typewriter carriage, of a computer carriage, means to cause said computer carriage to travel with said typewriter carriage while the latter passes through a computing zone, and to release said computer carriage when said typewriter carriage passes out of said computing zone, means to return said computercarriage to a normal position after the'typewriter carriuge'has passed through a-computing zone, a key, and means, actuated by said key for re-positioning saidxcomputer carriage relatively to said typewriter earriage when the latter is moved back into a computing zone. 5

24. The combination with a typewriter carriage, of a computer carriage adapted to travel with saidztypewriter carriage during various intervals, hack-spacing means for said typewriter carriage, and meansxconnected to said back-spacing means for [IQ-PO- sitioning said computer carriage relatively to said typewriter lcarriage. g

25. The combination with a typewriter carriage having a plurality of footing totalizers arranged to travel therewith through computing zones, of a cross-totalizer adapted to travel with said typewriter carriage when the ilatter travels through a computing zone, said cross-totalizer being adapted to resume a normal position after thetypewriter carriage passes out of the computing zone, a back-spacing mechanism for moving the typewriter carriage to back a footing totalizer into a computing zone, and means operated by said back-spacing mechanism for repositioning said cross-to talizer to register the latter denominationally with said footing totalizer and with said typewriter carriage.

26. The combination with a typewriter carriage, of a sub-carriage, means to cause said sub-carriage to travel with said typewriter carriage when the latter travels through any one of aplurality of zones, means for returning said sub-carriage to a normal position each time after the typewriter carriage has passed through a zone, a back-spacing mechanism for said typewriter carriage, and means for re-connecting said sub-carriage with said typewriter carria e when the latter carriage is being bac spaced by said back-spacing mechanism.

27. The combination with a t pewriter carriage, of a sub-carriage adapted to travel with said typewriter carriage when the latter travels though any one of a plurality of zones, pick-up devices for said sub-carriage, means for releasing said sub-carriage so that it may resume a normal position after the typewriter carriage has'mpassed through a zone, back-spacing mechanism for printir ig keys effective. v29. 1

backwandly into :a computing zone, and

means, including a key, for simultaneously aecpnnectingsaid subecarriage with said typewriter carriage and rendering said 16 combination with a typewriter carriage, of a sub-carriage adapted to travel with said typewriter carriage through various zones, printing keys, said sub-rarriage being adapted to become released from said typewriter carriage and resume a normal position, means for locking said keys when. the typewriter carriage is backed into a zone,

and key-operated means for reconnecting said-sub-carriage with said typewriter carriage and for unlocking said'printing keys.

30. The combination with a typewriter carriage, of a subvearriage adapted to travel with said typewriter carriage when the latter travels throu 11 any one of a plurality of zones, pick-up gevices for said sub-oarriage, means for releasing said sub-carriage so that it may resume a normal position after the typewriter carriage has passed through a zone, printing keys, means con trolled from said pick-up devices for locking said keys when the typewriter carriage is backed into a zone and key-operated means for reconnecting said sub-carriage with one of said pick-up devices and for unlocking said printing keys.

31. The combination with a typewriter .carriage, of a sub-carriage, printing keys,

said sub-carriage being adapted to, travei with said typewriter carriage through various zones, and to become released from said typewriter carriage to resume a normal position, means controlled by the typewriter carriage for rendering said keys ineffective when the typewriter carriage is backed into a zone, and key operated means for simultaneously reconnecting said sub-carriage with said typewriter carriage and rendering said printing keys effective.

32. The combination with a typewriter carriage, of a sub-carriage, printing keys, said sub-carriage being adapted to travel with said typewriter canria e through various zones and to become reieased from said typewriter carriage to resume a normal 1m sltlon, means effective when said typewriter carriage is backed into a zone to impart a movement to said sub-carriage to render said printing keys ineffective, and means "for rendering said keys effective.

33. The combination with a typewriter carriage, of a sub-carriage, printing keys, means to cause said sub-carriage to travel with said typewriter carriage through various zones, and to become released from said typewriter carriage to resume a normal position, setta'ble devices connected to said typewriter carriage to travel therewith, controlling means, actuated by said settable devices, to render said printing keys ineffective when the typewriter carriage is backed into a zone, said controlling means being effective in its operation to impart a movement to said sub-carriage, and means for rendering said he s efi'ective.

34. he combination with a typewriter carriage, of a computer carriage adapted to travel with said typewriter carriage while the latter passes through mmputing zones, pick-up dcvi cs for connecting said typewriter carriage with said computer carriage, means for releasing said computer carriage from said typewriter carriage when the latter passes out of a computing zone, a key, and means actuated by said key for reconnecting said computer carriage with said typewriter carriage when the latter is backed into a computing zone.

85. The combination with a typewriter carriage, of a sub-carria' e, pick-up devices connected to travel witi "said typewriter carriage, connecting means to cause said sub-carriage to move with a pick-up device during the passage of the latter through a computing zone, means to render said connecting means ineffective when the effective pick-up device passes out of a computing zone, back-spacing mechanism for said typewriter carriage, and means controlled by said back-spacing mechanism to reconnect said sub-carriage with one of said pick-up devices by means of said connecting means.

36. The combination with a typewriter carriage, of a sub-carriage, connections whereby said sub-carriage is caused to travel with said typewriter carriage through vari ous zones, means to release said sub-carriage by rendering said connections ineffective, means to restore said sub carriage to normal position when released, numeral keys, a numoral-key lock, means to render said lock effective when said typewriter carriage is backed into a zone, and means including a key for reconnecting saidsub-cari'iage with saidtypewritercarriage and rendering said lock inefl'ective. 7

37. The combinationwith a traveling carriage, of acomputer carriage, mechanism whereby said computer carriageis connected with said traveling carriage td'travel therewith through a computing zone, released-at the end of a computing zone, and restored to normal position, numeral keys, a numeralkey lock ineffective when said computer carriage is in normal position, and means to render said lock eiiective in case said computer carriage becomes disconnected from said traveling carriage during the travel of the latter through a computing zone.

38. The combination with a traveling oarriage, of a computer carriage, connections whereby said computer carriage is caused to travel with said traveling carriage during the passage of the latter through computing zones, means to release said computer carriage, means to restore said computer car: riage to normal position, numeral keys, 2. numeral-key lo:.-k rendered effective by said computer carriage when held in a certain abnormal position, and means to cause said computer carriage to assume said abnormal position when the typewriter carriage is backed into a computing zone.

The combination with a traveling carriage, of computing means, including a computer carriage and numeral keys, means actuated by said traveling carriage to advance the computer carriage therewith through a computing zone and release the same, means to return said computer carriage to its normal position, a numeral-key lock rendered effective by said computer carriage when in a certain abnormal position, and means whereby said computer carriage, if disconnected during a. passage through a computing zone, will be caused to assume said abnormal position when returned by said returning means.

40. The combination with a carriage, of a column-computer unit comprising two elements, namely, a master wheel and a totalizer, one of said elements traveling relatively to the other when said carriage passes through a computing zone, a cross-computer unit "comprising two elements, namely, a master wheel and a totalizer, one of said last-mentioned elements being adapted to travel relatively to the other, means to cause the traveling element of said cross-computer unit to travel with thetraveling element of the column-computer unit when the carriage passes through apomputing zone, means to permit said eross computer traveling element to return to a normal position after the carriage passes outof a computing zone, a key, and means contr lled thereby for returning said carriage to said computing zone and for registering said traveling elements of each computing unit with respect to the relatively-fixed elements.

HiThe combination with a carriage, of a column-computer unit comprising two elements,"namely, amaster wheel and a totalizer, one of said elements traveling relatheir t the other h n said car iage passes through a computing zone, a cross-comput unit comprising two elements, namely, a master wheel and a totalizer, one of said lost-mentioned elements being adapted to travel relatively to the other, means to cause the traveling element of said cross-computer unit to travel with the traveling element of the column-computer unit when the carriage passes through a computing zone, means to permit said cross-computer traveling @element to return to a normal position after the carriage out of the computing zone, a hack-spacer for the traveling element of said Column-computer unit, and a connection from ,said back-spacer for causing a relative e-registering, of the elements of said cross-computer unit.

42. The combination with a carriage, of a COlHIBIlrfiOHlPUhBl unit comprising two elements, namely, a master wheel and a totalizer, one of said elements traveling relatively to the other when said carriage passes through a computing zone, a cross-computer unit comprising two elements, namely, a'

master wheel and a totalizer, one of said lastmentioned elements being adapted to travel relatively to the other, means to cause the traveling element of said cross-computer unit to travel in synchronism with the traving element of the column-computer unit when the carriage passes through a computing zone, means to permit said cross-computer traveling element to return to a normal position after the carriage passes out of the computing zone, and a back-spacer effective to back-space both of said traveling elements when the carriage 1s 1n the computing zone, said back-spacer being effective, after the carriage passes out of the computing zone, to reposition the traveling element of the cross-computer unit relatively to the fixed element thereof.

43. The combination with a typewriter carriage, of a cross-totalizier adapted to travel with'suid typewriter carriage when the latter passes through a computing zone, a master wheel therefor, means to permit sa d crosstotalizer to resume a normal position when the typewriter carriage passes out of the computing zone, and key eoperated means for repositioning said cross-total zer relatively to its master wheel after saidtotaliz er has returned to its normal position. 44. The combination with a typewriter carriage and a plurality of column-totalizers trareling therewith, of a master wheel therefor, a cross-totalizer adapted to travel with said typewriter carriage when the latter passes through a computing none, means to permit said cross-totalizer to resume a normal position when the typewritercarriage passes out of a computing zone, and key operated means for simultan usly back-spacing the typewriter carriage to reposition one of the column-totalizcrs rel tively to the master wheel, and for repositioning said cross-totalizer relatively to its master wheel after the typewriter carriage has passed out of the computing zone.

45. The combination with a typewriter carriage and a plurality of adjustable elements traveling therewith, of a cross-totalizer, means including a pick-up element to cause said totalizer to travel intermittently with said carriage, a back-spacer for said typewriter carriage, a connection from said back-spacer to reposition said cross-total,- izer, numeral keys, locking means for said numeral keys, means includin an intermediate lever for rendering said ocking means effective, a swinging lever, and a shoe on said swinging lever, said intermediate lever being pivotally supported on said swinging lever, said adjustable elements being effective during the movement of the carriage in the reverse letter-feed direction to actuate said pivoted lever to render said locking means effective, said pivoted lever, during its actuation, serving as a lover of the third order.

46. The combination with a typewriter carriage, of a plurality of adjustable elements traveling therewith, a cross-totalizer, means for causing said cross-totalizer to travel intermittently with said typewriter carriage, key-operated means for back-spacing said typewriter carriage and for repositioning sai cross-totali-zer relatively to said typewriter carriage, numeral keys, and means for locking said numeral keys when the carriage is backed into a compting zone, without the assistance of the key-operated means, said locking means comprising an intermediate element actuable by said adjustable elements.

47. The combination with a typewriter carriage, of a plurality of adjustable elements traveling therewith, a crosstotalizer, means for causing said cross-totalizer to travel intermittently with said typewriter carriage, keyeoperated means for back-spacing said typewriter carriage and for repositioning said cross-totalizer relatively to said typewriter carriage, numeral keys, and means for locking said numeral keys when the carriage is backed into a computing zone, without the assistance of the key-operated means, said locking means comprising a swinging lever, actuable by said aidtypewriter carriage, a connection from said back-spacer to reposition said cross-totalizer, numeral keys, locking means for said numeral keys, and means including an intermediate element for rendering said locking means effective, said intermediate element being actuable by any one of said traveling elements when the typewriter carriage is moved in a. reverse letter-feed direction.

HENRY L. PITMAN. Witnesses:

A. J. ROURBIER, J. J. KENNEDY. 

